New Zealand’s tax system has specific rules for people who are arriving in New Zealand, leaving New Zealand, or earning income from overseas. Whether you are a Kiwi heading abroad, an expat arriving from the UK or Australia, or a working holiday visa holder trying to understand your tax code — this hub covers your obligations.
NZ Tax Residency: The Foundation of Everything
Whether you are liable for NZ income tax depends first and foremost on whether you are a New Zealand tax resident. Tax residency is not the same as citizenship or permanent residency. IRD applies two tests:
The 183-day test: If you are present in New Zealand for more than 183 days in any 12-month period, you become a NZ tax resident.
The permanent place of abode test: If you have a permanent place of abode in New Zealand (usually a home you maintain), you remain a NZ tax resident even if you spend significant time overseas.
As a NZ tax resident, you are taxed on your worldwide income — including salary earned overseas, foreign investment returns, and rental income from properties in other countries. As a non-resident, you are only taxed on NZ-sourced income.
Leaving New Zealand
When you leave New Zealand to live overseas, your NZ tax residency doesn’t automatically end. You must genuinely cease to have a permanent place of abode in New Zealand — which typically means selling or renting out your home, cutting ties with NZ, and not returning for extended periods.
Once you become a non-resident, IRD applies Non-Resident Withholding Tax (NRWT) on NZ-sourced income (interest, dividends, royalties). Your KiwiSaver remains locked until you reach 65 (or qualify for early withdrawal under specific rules for permanent emigration to Australia).
Working Holiday Visa Holders
New Zealand is a popular destination for working holiday visa holders from the UK, Germany, Japan, France, and many other countries. Working holiday workers are usually treated as NZ tax residents if they stay more than 183 days and must file a NZ tax return (IR3) and may be eligible for a tax refund if they overpaid PAYE during the year.
Trans-Tasman Rules
New Zealand and Australia have a bilateral social security agreement covering KiwiSaver and Australian superannuation. Australians working in NZ are automatically enrolled in KiwiSaver but can apply for an exemption. When leaving NZ permanently to live in Australia, you can transfer your KiwiSaver balance to an Australian complying superannuation fund.
International Tax Guides
- NZ Tax Residency Test — The 183-Day Rule — how IRD determines if you are a NZ tax resident
- Leaving NZ — Your Final Tax Obligations — non-residency, NRWT, KiwiSaver, final IR3
- Working Holiday NZ Tax Guide — tax codes, refunds, and filing for WHV holders
- Australian Working in NZ — Tax Guide — trans-Tasman rules, KiwiSaver/super, tax codes
- Overseas Student Loan NZ Guide — the 183-day rule, interest charges, repayment obligations and risks